Yesterday (2/16/14) my phone must have auto-updated something and now it's not working. I can power it off, boot into recovery, and boot normally. When I go to swipe the home screen I get three messages in this sequence:
Unfortunately, Exchange Services have stopped.
Unfortunately, Email has stopped.
Unfortunately, Google Partner Setup has stopped.
Unfortunately, Launcher3 has stopped.
After clicking OK on these all I get is the last one repeating against my lock screen background. I click OK and get it again...and it never stops.
I can access settings and turn on WiFi or the data network, and I can receive calls. I cannot access any applications at all.
I had NovaLauncer on the phone and it worked great. When I go into settings I can only see Launcher3 listed in the Home menu. I tried going to Play Store and selecting another launcher but it seems that my phone does not get notified that there is an update waiting.